Lihat disini

package array;
import java.util.Scanner;
public class Array {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        System.out.print("Berapa Barang Yang Ingin Dibeli : ");
        int barang = scan.nextInt();
        String nama []= new String [barang];
        int harga[]= new int [barang];
        int jumlah[]= new int[barang];
        int total[]= new int[barang];
        int bayar=0;
        for (int i=0; i<barang; i++){
            System.out.print("Nama Barang "+(i+1)+" : ");
            nama[i]=scan.next();
            System.out.print("Jumlah "+nama[i]+" : ");
            jumlah[i]=scan.nextInt();
            System.out.print("Harga "+nama[i]+" : ");
            harga[i]=scan.nextInt();
            total[i]= jumlah[i]*harga[i];
            System.out.print("Total Bayar "+total[i]+" : ");
            System.out.println("");
            bayar=bayar+total[i];
        }
        System.out.println("");
        System.out.println("");
        for (int j=0; j<barang; j++){
            System.out.println("Barang ke-"+(j+1));
            System.out.println("Nama Barang : "+nama[j]);
            System.out.println("Jumlah : "+jumlah[j]);
            System.out.println("Harga Barang : "+harga[j]);
         }
        System.out.println("Total Belanja : "+bayar);
    }
}